[R-390] R-390 IF: Looking for 20-pin socket and plug

[Barry]

I have a 20-pin female connector that I believe was for an R390A.  I presume that's the same as for the R390 but I don't know that for sure.  Unfortunately, I don't have the male chassis mount part.

Let me know if you think you can use it.

73,
Barry - N4BUQ

> Everything has been going well on restoring my R-390, until I noticed no AGC
> voltage.  Then I unplugged the 20-pin connector.  Lo and behold, pin 15 had
> corroded right off (the AGC line)!  The mating plug has severe pitting and a
> thick black oxide replaced what was once gold plating.  But underneath,
> everything is pristine.  I am going to have to replace the pair.
> 
> A parts radio might yield them.  I would happily buy them.  An extender cable
> would have this pair.
> 
> Interestingly, the Antenna Box BNC jacks were destroyed by pitting, but I
> re-built that without thinking beyond it.  This reminded my of the circuit
> breakers in a plant that made sulfuric acid.  Not only did the breakers fail
> every few months, but the panels would grow long silver whiskers.  So there
> was something in the environment of that radio... ?
> 
> Thank you,
> WN9i Fred
> 
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